Airtac SAIJ80 Adjustable Cylinder SAIJ80X250-100S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X250-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 250mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke250 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X250-100S
The AirTAC SAIJ80X250-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 150 to 250 mm. Delivering 2513 N of push force at 0.5 MPa, it features a 25 mm carbon steel rod and PT tapered port threads (G3/8) for robust pneumatic integration. An integrated magnet enables position sensing with CMSE reed or DMSE electronic switches.
This adjustable-stroke model allows operators to dial in the exact retract end-position during commissioning or product changeovers without swapping the cylinder or adding external stops. The 100 mm adjustment screw acts purely as a mechanical travel stop to set the deceleration point alongside the variable air cushions; it is not a locking device and will not hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X250-100S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X250-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80X250-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ80 Adjustable Cylinder SAIJ80X250-100S Is Used
Product Size Changeovers
Quickly reconfigure the retract distance by up to 100 mm on packaging lines running varied container sizes, eliminating the need to physically swap out cylinders during format changes.
Commissioning End-Stop Tuning
Fine-tune the final resting position of a tooling head during machine setup, allowing operators to dial in exact contact points without machining custom external spacers.
Variable Diverting Gates
Adjust the stroke window on sorting conveyors to accommodate different package widths on the fly, ensuring precise physical diversion without reprogramming the motion controller.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X250-100S the Right Cylinder?
Choose this 80 mm bore when an application requires higher thrust than a 63 mm cylinder (which provides 1559 N push at 0.5 MPa) but does not need the full 3927 N output of a 100 mm bore. The generous 100 mm adjustment range makes the SAIJ80X250-100-S particularly effective for machines processing multiple product sizes, replacing the need to inventory several fixed-stroke SAI cylinders. To match this ISO 15552 footprint exactly, specify an 80 mm bore, 250 mm nominal stroke, PT port threads, and the -S magnet option.
Because the 250 mm stroke creates a long lever arm on the 25 mm rod, external guide rails should be used to prevent excessive side-loading and premature seal wear. For applications requiring the load to be held mechanically without continuous air pressure, an external rod lock or a dedicated AirTAC SAIL locking cylinder is required, as the rear adjuster only functions as an end-position stopper.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X250-100S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 3518 N.
The rear adjuster allows you to shorten the effective stroke from its 250 mm nominal length down to as little as 150 mm. This creates a 150-250 mm adjustable travel window, enabling precise end-position tuning at commissioning without changing the cylinder's ISO 15552 mounting footprint.
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